Posted: 14/04/2013 at 00:52
I've found that smaller bees and hoverflies visit annual trailing lobelia and bidens in hanging baskets. Like other contributors to this thread I grow bird's foot trefoil around the edges of tubs allowing the plants to cascade down the sides of the containers. All bee types are attracted to these. I think growing them from seed could be tricky. I buy them as small plug plants. Each plant lasts several years although they die back completely over winter. Sometimes aubretia plants have proven to be highly attractive although the current plants I have are disappointing in this respect.
I'm experimenting with growing the annual night phlox (Zaluzianskya capensis) this year. Does anyone have any experience as to whether this plant is attractive to insects? I'm hoping its alleged night fragrance will be attractive to moths.